Hadith.3282 - And in another narration, Imam (as) said:
"The testimony of the one who arouses suspicion (Al-Mureeb), the adversary (Al-Khasm), the one evading a financial obligation (Dafi' Maghram), the hired worker (Ajir), the business partner (Shareek), the accused (Mutaham), or the follower (Tabi') is not valid.
Furthermore, the testimony of a wine drinker (Sharib Al-Khamr), a player of chess (Shatranj) and dice (Nard), and a gambler (Muqamir) is not accepted."